code: def world_size(self):
      return 2
  
file_path: CrypTen/test/multithread_test_case.py
imports: import queue
  import sys
  import threading
  import unittest
  from functools import wraps
  from threading import Thread
  import crypten
label_desc: Use image node_id 2 for calling the MultiThreadTestCase obj's underlying member method code with example usage: obj.world_size() and returns: int